Calificación Moto3 - Gran Premio de Américas 2018
| Pos. | Piloto | Equipo | Moto | Tiempo |
|---|---|---|---|---|
| 1 | 
Jorge Martin |
Del Conca Gresini Moto3 | Honda | 2:18.629 |
| 2 |
Arón Canet |
Estrella Galicia 0,0 | Honda | +0.496 |
| 3 | 
John Mcphee |
CIP - Green Power | KTM | +0.792 |
| 4 | 
Tatsuki Suzuki |
SIC58 Squadra Corse | Honda | +0.799 |
| 5 | 
Fabio Di Giannantonio |
Del Conca Gresini Moto3 | Honda | +0.868 |
| 6 |
Enea Bastianini |
Leopard Racing | Honda | +0.948 |
| 7 |
Dennis Foggia |
SKY Racing Team VR46 | KTM | +0.959 |
| 8 |
Ayumu Sasaki |
Petronas Sprinta Racing | Honda | +1.011 |
| 9 |
Marco Bezzecchi |
Redox PruestelGP | KTM | +1.055 |
| 10 |
Jaume Masia |
Bester Capital Dubai | KTM | +1.179 |
| 11 | 
Philipp Oettl |
Sudmetal Schedl GP Racing | KTM | +1.187 |
| 12 | 
Gabriel Rodrigo |
RBA BOE Skull Rider | KTM | +1.221 |
| 13 | 
Nakarin Atiratphuvapat |
Honda Team Asia | Honda | +1.341 |
| 14 |
Marcos Ramírez |
Bester Capital Dubai | KTM | +1.373 |
| 15 | 
Darryn Binder |
Red Bull KTM Ajo | KTM | +1.398 |
| 16 |
Andrea Migno |
Angel Nieto Team Moto3 | KTM | +1.628 |
| 17 |
Lorenzo Dalla Porta |
Leopard Racing | Honda | +1.694 |
| 18 | 
Makar Yurchenko |
CIP - Green Power | KTM | +1.737 |
| 19 |
Niccolo Antonelli |
SIC58 Squadra Corse | Honda | +1.751 |
| 20 |
Tony Arbolino |
Marinelli Snipers Team | Honda | +1.856 |
| 21 | 
Jakub Kornfeil |
Redox PruestelGP | KTM | +2.195 |
| 22 |
Alonso López |
Estrella Galicia 0,0 | Honda | +2.288 |
| 23 |
Nicolo Bulega |
SKY Racing Team VR46 | KTM | +2.336 |
| 24 |
Albert Arenas |
Angel Nieto Team Moto3 | KTM | +2.392 |
| 25 | 
Adam Norrodin |
Petronas Sprinta Racing | Honda | +2.538 |
| 26 | 
Livio Loi |
Reale Avintia Academy | KTM | +2.650 |
| 27 |
Kazuki Masaki |
RBA BOE Skull Rider | KTM | +4.191 |
| 28 |
Kaito Toba |
Honda Team Asia | Honda | +4.454 |